Brilliant white when bleached in sun.
What is cactus algae?
Turns dark brown on beach.
What is pelagic sargassum?
Have bitter chemicals that discourage grazing by fish
What is iridescent-banded algae?
Where branching coralline algae grows?
What is shallow seagrass beds?
Also known as bubble algae
What is Sailor’s Eye?
Has air-filled bladders on its longest branches
What is attached sargassum?
Provides a life raft for hundreds of marine animal species
What is sargassum?
Its branch tips usually end in sickle hooks
What is hypnea?
Forms a domed clump in water
What is green fleece?
Largely disappears in cold months
What is dictyota?
A toxic alien species of this green seaweed invaded the Mediterranean Sea.
What is caulerpa?
When alive, this alga is pale lavender.
What is branching coralline algae?
Has pale yellow rhizomes and stubby branchlets
What is grape caulerpa?
Recognized by its bubble-ball appearance
What is balloon seaweed?
When pulverized, this seaweed makes up most of the white beach in the Keys
What is cactus algae?
Has pale-pink branchlets
What is spiny seaweed?
A calcareous algae, along with cactus algae
What is shaving brush algae?
Contains air in its pyramid-shaped fronds
What is three-cornered hat algae?
Has photosynthetic pigment that absorbs blue light
What is red algae?
Red algae is somewhat related to this other kind of algae
What is green algae?